Worked on the vitessio/vitess repository to address a critical data correctness issue in multi-database environments. Focused on backend development using Go and SQL, the developer implemented a fix that added missing db_name filters to vreplication and vdiff SQL queries. This technical approach ensured that replication and diff operations were properly scoped to the intended database, reducing the risk of incorrect results and enhancing data integrity. By improving query scoping, the work strengthened operational safety and reliability for multi-tenant replication workflows. The contribution demonstrated attention to detail in database management and a clear understanding of cross-database replication challenges.